These sturdy bars travel well; pack them in lunch boxes or take to a picnic or potluck.
Preheat the oven to 350 degree F. Lightly coat 13x9x2-inch baking pan with cooking spray or grease with some shortening. Set aside. In a large mixing bowl beat together the brown sugar, peanut butter, cooking oil, and eggs until well blended.
Beat in milk, then beat in flour until well combined. Spread into a prepared pan.
Sprinkle peanut-butter-flavored pieces and peanuts atop. Bake in 350 degree F oven 20 to 25 minutes or until a wooden toothpick inserted in center comes out clean. Cool in pan on a wire rack. Cut into bars. Makes 32 bars.
We used self-rising flour because it saves measuring additional ingredients. If you don't keep it on hand, substitute a mixture of 1-1/2 cups all-purpose flour, 1 teaspoon baking powder, and 1/2 teaspoon baking soda.